波浪辐射应力在渤海湾海域对风暴潮影响的研究  

The study on the effect of wave-radiation stress on storm surge in Bohai Bay

作　　者：李大鸣[1] 徐亚男[1] 宋双霞[1] 解以扬[2] 吴丹朱[2] 何乃光[2] 

机构地区：[1]天津大学建筑工程学院暨港口与海洋工程教育部重点实验室,天津300072 [2]天津市气象科学研究所,天津300074

出　　处：《水动力学研究与进展（A辑）》2010年第3期374-382,共9页Chinese Journal of Hydrodynamics

摘　　要：基于N-S方程建立了风场与波浪非线性耦合作用下风暴潮数值预报模型。采用MM5中尺度数值预报计算模式得到所需风场数据,同时应用莆田站方法来预报风浪波要素,从而计算风暴潮影响因素风应力及波浪辐射应力。利用ADI差分格式离散控制方程。模拟了2007年3月份渤海湾一次风暴潮过程,分别计算了受风应力、波浪辐射应力及二者综合作用下的渤海湾海域风暴潮潮位及潮流过程,并将计算潮位与实测潮位资料作对比,得到风应力是渤海沿岸风暴潮的主要影响因素,而在波浪辐射应力作用下风暴潮潮位极值处的增水较为明显,且在地形与波浪辐射应力作用下渤海湾风暴潮潮流过程受到明显扰动的结论。Based on N-S equation a numerical model of storm surge affected by the coupling of wind and wave has been established.The numerical model MM5 for forecast was used to calculate wind data and Putian Station Method was adopted to get wave elements.Therefore,wind stress and radiation stress could be calculated by using the data from those mentioned above.The governing equation was discretized by ADI difference method.The model has been employed for simulating the storm surge process happened in Mar.2007 in Bohai Bay.It predicts the water level and tidal current process affected by either the wind stress or radiation stress,and by the both.Comparisons between calculated results and measured tidal data are made.It shows that wind stress is the main factor influencing storm surge in Bohai Bay area while radiation stress has remarkable effect on the extremum of water rising caused by storm surge.It also draws a conclusion that the tidal current process is significantly influenced by the topography and radiation stress.

关 键 词：风暴潮 MM5 ADI 风应力 波浪辐射应力 

分 类 号：P456.7[天文地球—大气科学及气象学] TV139.221[水利工程—水力学及河流动力学]